adverb
Definition: In a way that indicates refusal or rejection; used to say no to something.
Example: When asked if he wanted to go to the party, he said nix.
noun
Definition: A mythical creature from German folklore, often depicted as a water sprite that can appear in human or half-human, half-fish form.
Example: In the story, the nix lured sailors with its enchanting song.
transitive verb
Definition: To refuse or reject something, especially in a decisive way.
Example: The manager nixed the proposal for a new project.